In 2000, Park Ji-Sung signed his first official contract with Japanese side Kyoto Purple Sanga.

In 2002, after South Korea's stunning run to the World Cup semi-finals, Park Ji-Sung moved to the Dutch side, PSV Eindhoven. In his first season there, PSV won the Eredivisie, the Dutch league, but Park Ji-Sung rarely started. Two years later, however, he was an integral part of the PSV side that won the league and cup double in 2005.

Park Ji-Sung came to many people's attention after cutting AC Milan apart in the Champions League semi-finals, scoring a goal in the process, in a match PSV were very unlucky to lose.

By 2005, Park had already established himself in the Champions League with 23 appearances, all for PSV and by the age of 24 has already received 50 caps for his country.

On the 8th of July 2005, Park Ji-Sung agreed a transfer to Manchester United for £4m. Park is very skilful and energetic and can play in the centre or on the left of midfield.

On 20 December 2005 Park Ji-Sung scored his first goal for Manchester United in their quarter final Carling Cup victory over Birmingham. Park was playing well for Manchester United but he injured his knee in the match against Blackburn on 31 March 2007 and was not fit again until the end of 2007.

Nevertheless, Park Ji-Sung returned and became an integral part of the Manchester United squad that won the Premiership in 2008/9.

In January 2011, Park Ji-Sung announced his retirement from international football, soon after winning his 100th cap in South Korea's Asian Cup semi-final defeat by Japan.

Having won four Premier League titles and the Champions League with Manchester United, Park Ji-Sung was transferred to QPR in July 2012.